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Return values from a component with yield

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  • Post category:EmberJS
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The values can be returned from a component by using the yield option.

Syntax

{#each myval as |myval1|}}
   {{ yield myval1 }}
{{/each}}

Example

The example given below specifies returning values from a component with the yield property. Create a route with the name comp-yield and open the router.js file to define the URL mappings −

import Ember from 'ember';                   
//Access to Ember.js library as variable Ember
import config from './config/environment';
//It provides access to app's configuration data as variable config 

//The const declares read only variable
const Router = Ember.Router.extend ({
   location: config.locationType,
   rootURL: config.rootURL
});

//Defines URL mappings that takes parameter as an object to create the routes
Router.map(function() {
   this.route('comp-yield');
});

export default Router;

Create the application.hbs file and add the following code −

//link-to is a handlebar helper used for creating links
{{#link-to 'comp-yield'}}Click Here{{/link-to}}
{{outlet}} //It is a general helper, where content from other pages 
   will appear inside this section

Open the comp-yield.js file which is created under app/routes/ and enter the following code −

import Ember from 'ember';

export default Ember.Route.extend ({
   model: function() {
      //an array called 'country' contains objects
      return { country: ['India', 'England', 'Australia'] }; 
   }
});

Create a component with the name comp-yield and open the component template file comp-yield.hbs created under app/templates/ with the following code −

{{#comp-yield country=model.country as |myval|}}
   <h3>{{ myval }}</h3>
{{/comp-yield}}
{{outlet}}

Open the comp-yield.hbs file created under app/templates/components/ and enter the following code −

<h2>List of countries are:</h2>
//template iterates an array named 'country'
{{#each country as |myval|}}   //each item in an array provided as blobk param 'myval'
   {{ yield myval }}
{{/each}}

Output

Run the ember server; you will receive the following output −

returned

When you click on the link, it will display the list of objects from an array as shown in the screenshot below −

returned

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